curl --request PATCH \
  --url http://localhost:7701/api/v1/subscriptions/{uuid}/plan \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --header 'x-client-id: <x-client-id>' \
  --data '
{
  "new_plan_uuid": "plan-uuid-...",
  "immediately": false
}
'

import requests

url = "http://localhost:7701/api/v1/subscriptions/{uuid}/plan"

payload = {
    "new_plan_uuid": "plan-uuid-...",
    "immediately": False
}
headers = {
    "x-client-id": "<x-client-id>",
    "X-API-Key": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.patch(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'PATCH',
  headers: {
    'x-client-id': '<x-client-id>',
    'X-API-Key': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({new_plan_uuid: 'plan-uuid-...', immediately: false})
};

fetch('http://localhost:7701/api/v1/subscriptions/{uuid}/plan', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_PORT => "7701",
  CURLOPT_URL => "http://localhost:7701/api/v1/subscriptions/{uuid}/plan",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PATCH",
  CURLOPT_POSTFIELDS => json_encode([
    'new_plan_uuid' => 'plan-uuid-...',
    'immediately' => false
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-API-Key: <api-key>",
    "x-client-id: <x-client-id>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "http://localhost:7701/api/v1/subscriptions/{uuid}/plan"

	payload := strings.NewReader("{\n  \"new_plan_uuid\": \"plan-uuid-...\",\n  \"immediately\": false\n}")

	req, _ := http.NewRequest("PATCH", url, payload)

	req.Header.Add("x-client-id", "<x-client-id>")
	req.Header.Add("X-API-Key", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.patch("http://localhost:7701/api/v1/subscriptions/{uuid}/plan")
  .header("x-client-id", "<x-client-id>")
  .header("X-API-Key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"new_plan_uuid\": \"plan-uuid-...\",\n  \"immediately\": false\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("http://localhost:7701/api/v1/subscriptions/{uuid}/plan")

http = Net::HTTP.new(url.host, url.port)

request = Net::HTTP::Patch.new(url)
request["x-client-id"] = '<x-client-id>'
request["X-API-Key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"new_plan_uuid\": \"plan-uuid-...\",\n  \"immediately\": false\n}"

response = http.request(request)
puts response.read_body

{
  "data": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "status": "active",
    "plan": {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "name": "Basic Monthly",
      "description": "<string>",
      "amount": 2990,
      "currency": "BRL",
      "interval": "monthly",
      "interval_count": 1,
      "trial_period_days": 7,
      "billing_day": 5,
      "min_card_months": 3,
      "is_active": true,
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z"
    },
    "customer": {},
    "card": {
      "last_4_digits": "4242",
      "brand": "visa",
      "expire_month": "12",
      "expire_year": "2028"
    },
    "coupon": {},
    "amount": 2990,
    "original_amount": 2990,
    "discount_amount": 500,
    "currency": "BRL",
    "interval": "monthly",
    "interval_count": 1,
    "billing_day": 5,
    "trial": {
      "period_days": 7,
      "start": "2023-11-07T05:31:56Z",
      "end": "2023-11-07T05:31:56Z"
    },
    "current_period": {
      "start": "2023-11-07T05:31:56Z",
      "end": "2023-11-07T05:31:56Z"
    },
    "next_billing_at": "2023-11-07T05:31:56Z",
    "paused_at": "2023-11-07T05:31:56Z",
    "paused_until": "2023-11-07T05:31:56Z",
    "canceled_at": "2023-11-07T05:31:56Z",
    "cancel_at": "2023-11-07T05:31:56Z",
    "cancel_at_period_end": false,
    "plan_change_at": "2023-11-07T05:31:56Z",
    "new_plan_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "metadata": [
      {}
    ],
    "created_at": "2023-11-07T05:31:56Z",
    "updated_at": "2023-11-07T05:31:56Z"
  }
}